The frontal sinuses are one of the four pairs of paranasal sinuses that are situated behind the brow ridges. Sinuses are mucosa-lined airspaces within...

Paranasal sinuses are a group of four paired air-filled spaces that surround the nasal cavity. The maxillary sinuses are located under the eyes; the frontal sinuses...

Frontal sinus trephination is a surgical procedure wherein a small opening is made in the floor of the frontal sinus to facilitate drainage of its contents...

Maxillary sinus, is the largest of the paranasal sinuses, under the eyes, in the maxillary bones Frontal sinus, superior to the eyes, in the frontal bone,...

cavities, normally the frontal sinus. It is caused by a difference in air pressures inside and outside the cavities. Typically, sinus barotrauma is preceded...

occurring in the sinus cavities can affect the chest and lungs. Paranasal sinuses Maxillary Ethmoid Sphenoid Frontal Dural venous sinuses Anterior midline...

forehead, the mucosa of the frontal sinus, and the skin of the upper eyelid. It may be affected by schwannoma. The frontal nerve is a branch of the ophthalmic...

the dura mater near the sinus.[citation needed] There are usually three lacunae on either side of the sinus: a small frontal, a large parietal, and an...

anterior ethmoidal nerve. It contributes blood supply to the ethmoid sinuses, frontal sinuses, the dura mater, lateral nasal wall, and nasal septum. It issues...

smell. The four paired paranasal sinuses are the frontal, ethmoidal, maxillary, and sphenoidal sinuses. The ethmoidal sinuses are further subdivided into anterior...

The frontal crest of the frontal bone ends below in a small notch which is converted into a foramen, the foramen cecum (or foramen caecum), by articulation...

ethmoid sinuses or ethmoid air cells of the ethmoid bone are one of the four paired paranasal sinuses. Unlike the other three pairs of paranasal sinuses which...

structures in the skull. Maxillary sinuses. Frontal sinuses, seen with an oblique view. Ethmoidal cells. Sphenoid sinus, seen through the open mouth. Odontoid...

frontal sinus drains into the nasal cavity. Each frontal sinus opens into the frontonasal duct by an opening (the opening of frontal sinus or frontal...

translucent sinus due to retained mucus. Maxillary sinusitis is common due to the close anatomic relation of the frontal sinus, anterior ethmoidal sinus and the...

Microcornea, glaucoma, and absent frontal sinuses is a very rare developmental genetic disorder that occurs during embryogenesis which is characterized...

frenum frontal air sinus frontal bone frontal eye field frontalis frontal horn of lateral ventricle frontal lobe frontal nerve frontal plane frontal pole...

Silent sinus syndrome most often affects the maxillary sinus, usually with a collapse of the orbital floor. It may also affect the frontal sinus or the...

from foci within the frontal sinus and propagate through this venous system. This type of chronic osteomyelitis of the frontal bone is confused with...

the frontal bone, the parietal bones, and part of[citation needed] the occipital bones. The sagittal sulcus accommodates the superior sagittal sinus. The...

paranasal sinuses – the frontal sinus, the sphenoid sinus, the ethmoid sinus and the maxillary sinus drain into regions of the nasal cavity. The sinuses are...

extent on the size of the frontal air sinuses; prominent ridges are, however, occasionally associated with small air sinuses. Beneath each superciliary...

provides parasympathetic innervation to the sphenoid sinus, frontal sinus, maxillary sinus, ethmoid sinus, and nasal cavity. This nerve also includes taste...

the frontal recess area, constricting it and causing mechanical obstruction to frontal sinus drainage. The agger nasi cell may be removed during sinus surgery...

development of the frontal sinuses begins at the end of the first or beginning of the second year, but may begin at birth. The sinuses are of considerable...

Cerebral venous sinus thrombosis (CVST), cerebral venous and sinus thrombosis or cerebral venous thrombosis (CVT), is the presence of a blood clot in the...

(PFC) covers the front part of the frontal lobe of the cerebral cortex. It is the association cortex in the frontal lobe. The PFC contains the Brodmann...

The sinus venosus is a large quadrangular cavity which precedes the atrium on the venous side of the chordate heart.[verification needed] In mammals,...

is the parietal foramen which transmits a vein to the superior sagittal sinus, and sometimes a small branch of the occipital artery; it is not constantly...

and frontal sinuses. It is named after the noted American radiologist Eugene W. Caldwell, who described it in 1907. Frontal sinus Ethmoidal sinus Orbit...